题目内容
-How long ______ each other before they ______ married?
--For about a year.
--For about a year.
| A.have they known; get | B.have they known; were going to get |
| C.do they know; are going to get | D.had they known; got |
D
谈论的是过去的事情,从句用一般过去时,主句动作发生在从句动作之前,用过去完成时。
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